I was completely sedentary from my childhood until I reached the age of 40 and 400 pounds. I began to exercise and eat better and lost 115 pounds in a year. I then bought a bike and taught myself to ride, never having learned as a child. My first ride was a mile, ending with a crash when a mailbox jumped in front of me. (Pennsylvania does not have a leash law for mailboxes.) My first year I rode 3000 miles.....